12981700033 has 2 divisors, whose sum is σ = 12981700034. Its totient is φ = 12981700032.

The previous prime is 12981700019. The next prime is 12981700073. The reversal of 12981700033 is 33000718921.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6726788289 + 6254911744 = 82017^2 + 79088^2 .

It is a cyclic number.

It is not a de Polignac number, because 12981700033 - 2²⁵ = 12948145601 is a prime.

It is not a weakly prime, because it can be changed into another prime (12981700003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6490850016 + 6490850017.

It is an arithmetic number, because the mean of its divisors is an integer number (6490850017).

Almost surely, 2^12981700033 is an apocalyptic number.

It is an amenable number.

12981700033 is a deficient number, since it is larger than the sum of its proper divisors (1).

12981700033 is an equidigital number, since it uses as much as digits as its factorization.

12981700033 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9072, while the sum is 34.

The spelling of 12981700033 in words is "twelve billion, nine hundred eighty-one million, seven hundred thousand, thirty-three".